If you want a different login name (known as your Handle on Mattermost), you need to change this on the Hub.
n.b Please be aware that if you change your Login name, this will re-create your Cloud account. If anyone has shared files and/or folders with you on the Cloud, then your access to these will be lost.
Do not change your handle on Mattermost, you must change it on The Hub. If you change your handle on Mattermost, then this will 'disconnect' your Mattermost account from your Hub account and Group Admins won't be able to find you to send you new invites to other Hub groups.
